Question

A coin at the bottom of a water tank appears to be 30cm deep.If the refractive index of water is 4/3. Find the actual depth of the tank.

Answer 1

Step-by-step explanation:

40 m is ur answer...........

Answer 2

Answer:

The actual depth of the tank will be 7.5 cm.

Step-by-step explanation:

Refractive Index (RI) = $\frac{apparent depth}{real depth}$

Substituting, $\frac{4}{3}$ = $\frac{30}{apparent depth}$

∴ Apparent depth = 30 × 3/4 = 22.5 cm

Thus, the height by which it appears to be raised is 30 − 22.5 = 7.5 cm

What is the refractive index?

The speed of light in a vacuum divided by the speed of light in a medium is the refractive index. The qualities of media influence the speed of light in that medium.

Thus, the higher the refractive index, the higher the medium's density and the slower the speed of light in that particular substance or medium.